The class Basic Measurement offers an overview of common gaging and variable inspection tools and methods. Variable inspection takes a specific measurement using common devices such as calipers and micrometers. The sensitivity of the instrument must be greater than the measurement being taken. Both calipers and micrometers are read by finding the alignments in lines on the devices. Gages, such as gage blocks, plug gages, ring gages, and thread gages, reveal whether a dimension is acceptable or unacceptable without a specific quantity. All inspection devices should be properly mastered and maintained to retain accuracy.One of the fundamental activities of any shop is the measurement of part features. Consistent measurement and inspection maintains standardization and ensures that out-of-tolerance parts do not reach customers. After taking this class, users should be able to describe the use and care of common inspection instruments and gages used in the production environment.
The training session will begin with a pretest to establish baseline understanding and prepare the learner for what to expect in the training material that follows. This module includes 23 lessons:
- The Importance of Measurements
- Accuracy and Precision
- Examples of Accuracy and Precision
- Gaging and Variable Inspection
- Examples of Gaging vs Variable Inspection
- Sensitivity
- Measurement
- The Machinist’s Rule
- Calipers
- Vernier Calipers
- Micrometers
- Micrometer Basics
- Vernier Micrometers
- Reading a Micrometer with a Vernier Scale
- The Vernier Scale
- Other Micrometers
- Gage Blocks
- Inspecting with Gage Blocks
- Plug Gages
- Ring, Thread, and Snap Gages
- Height Gages and Granite Plates
- Mastering and Calibration of Instruments
- Measurement Instruments
